GB877619A - Phosphatic fertilizers - Google Patents
Phosphatic fertilizersInfo
- Publication number
- GB877619A GB877619A GB3051656A GB3051656A GB877619A GB 877619 A GB877619 A GB 877619A GB 3051656 A GB3051656 A GB 3051656A GB 3051656 A GB3051656 A GB 3051656A GB 877619 A GB877619 A GB 877619A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphate
- moles
- sulphuric
- nitric acid
- phosphoric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
- C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
- C05B11/06—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using nitric acid (nitrophosphates)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A process for the production of fertilizer material comprises adding to phosphate rock a mixture of sulphuric and phosphoric acids, followed by treating with nitric acid and the product being neutralised. Suitable acids are the commercially available concentrated acids, e.g. 50-90% sulphuric, 50-70% phosphoric and 40-60% nitric acid and although the proportions used may vary over a large range, the preferred amounts per mole P2O5 in the rock are 1.4 to 3.5 moles sulphuric acid, 1 to 3 moles phosphoric acid and 1.5 to 10 moles nitric acid. The neutralizing agent is preferably ammonia, but may be potassium hydroxide or carbonate, and may be in such proportion as to leave substantially the whole of the phosphate water-soluble, (e.g. as monocalcium phosphate) or be sufficient to convert part to the citrate-soluble state (e.g. as dicalcium phosphate). Other plant food materials, e.g. ammonium sulphate, ammonium nitrate or potassium chloride may be added to the final product which may also be granulated.ALSO:A process for the production of fertilizer material comprises adding to phosphate rock a mixture of sulphuric and phosphoric acids, followed by treating with nitric acid and the product being neutralised. Suitable acids are the commercially available concentrated acids e.g. 50-90% sulphuric, 50-70% phosphoric and 40-60% nitric acid and although the proportions used may vary over a large range, the preferred amounts per mole P2O5 in the rock are 1,4 to 3,5 moles sulphuric acid, 1 to 3 moles phosphoric acid and 1,5 to 10 moles nitric acid. The neutralizing agent is preferably ammonia, but may be potassium hydroxide or carbonate, and may be in such proportion as to leave substantially the whole of the phosphate water-soluble, (e.g. as monocalcium phosphate) or be sufficient to convert part to the citrate-soluble (non-water-soluble) state (e.g. as dicalcium phosphate). Other plant food materials e.g. ammonium sulphate, ammonium nitrate or potassium chloride may be added to the final product which may also be granulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3051656A GB877619A (en) | 1956-10-06 | 1956-10-06 | Phosphatic fertilizers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3051656A GB877619A (en) | 1956-10-06 | 1956-10-06 | Phosphatic fertilizers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB877619A true GB877619A (en) | 1961-09-20 |
Family
ID=10308899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3051656A Expired GB877619A (en) | 1956-10-06 | 1956-10-06 | Phosphatic fertilizers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB877619A (en) |
-
1956
- 1956-10-06 GB GB3051656A patent/GB877619A/en not_active Expired
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